There are many entities relying on the Columbia River. Some need it for life, others for transport. All are competing and working in conjunction to have their needs met.
Columbia River Shipping Channel requires a lot of upkeep, while dredged material gains value « Special Projects
B.C. flood update: Some ferries cancelled, Gov't officials tour Abbotsford poultry farm in recovery, Highway 11 in Abbotsford reopens
Introduction - British Columbia
Mid-year trade growth through the Port of Vancouver reflects strength of diversified sectors
Competitive advantage
Money, power and an ecosystem are all at stake in Canada-U.S. negotiations over a massive river
Columbia River - Wikipedia
Breaking News: Clean Water Victory
Columbia River, Location, Length, History, & Facts
Columbia River: Description, Creation, and Discovery
Vancouver Comprehensive Plan 2011-2030 - City of Vancouver